#include<time.h>
#include<dos.h>
#define N1 64
#define N2 32
#define N4 16
#define N8 8
#define N16 4
#define END 0

enum NOTES
{
    C10=131,D10=147,E10=165,F10=175,G10=196,A10=220,B10=247,
    C0=262,D0=296,E0=330,F0=349,G0=392,A0=440,B0=494,
    C1=525,D1=587,E1=659,F1=698,G1=784,A1=880,B1=988,
    C2=1047,D2=1175,E2=1319,F2=1397,G2=1568,A2=1760,B2=1796
}

song[]=
{
    D0,N4,E0,N8,D0,N8,C0,N4,A10,N4,G10,N8,E10,N8,G10,N8,A10,
    N8,C0,N2,A10,N4,A10,N8,C0,N8,G10,N8,A0,N8,E0,N8,G0,N8,
    D0,N2,E0,N4,D0,N8,E0,N8,G0,N4,E0,N4,G10,N8,E10,N8,G10,
    N8,A10,N8,C0,N2,A10,N4,A10,N8,C0,N8,A10,N8,A10,N8,D10,
    N8,E10,N8,G10,N2,D0,N4,D0,N4,G0,N4,A0,N8,G0,N8,F0,N2,G0,
    N2,A0,N4,G0,N8,E0,N8,D0,N8,E0,N8,C0,N8,A10,N8,D0,N2,E0,
    N4,G0,N8,E0,N8,G0,N4,E0,N4,G10,N8,E10,N8,G10,N8,A10,N8,
    C0,N4,A10,N4,A10,N8,C0,N8,D0,N8,A10,N8,C0,N8,E0,N8,D0,
    N1,END,END
};

main()
{
    int note=0,fre,dur,control;
    clock_t goal;
    while(song[note]!=0)
    {
        fre=song[note];
        dur=song[note+1];
        if(kbhit()) break;
        if(fre)
        {
            outportb(0x43,0xb6);
            fre=(unsigned)(1193180L/fre);
            outportb(0x42,(char)fre);
            outportb(0x42,(char)(fre>>8));
            control=inportb(0x61);
            outportb(0x61,(control)|0x3);
        }
        goal=(clock_t)dur+clock();
        while(goal>clock());
        if(fre) outportb(0x61,control);
        goal=(clock_t)0;
        note=note+2;
    }
} 


